Improved machine for jointing and dressing staves



t UNITED STATES JACOB DOBBINS, OF LITGHFIELD, MICHIGAN.-

IMPROVED MACHINE FOR JOINTING AND DRESSING STAVES.

Specification forming part of Letters Patent No. 36,705, dated October 21, 1862.

To all whom, it may concern:

Be it known that I, JACOB DoBBINs, of Litchfield, in the county of Hillsdale and State of Michigan, have invented a new and Improved Machine for Dressing and Jointing Staves; and I do hereby declare that the fol- -lowing is a full, clear, and exact description of the same,` reference being had to the accom-` panying drawings, making a part of this speciiication, in whichHN Figure lisa front elevation of my invention. Fig. 2 is a side elevation of the same. Fig. 3 isa plan or top view of the Sallie; Fig. 4, a horizontal section of the same, taken in the line .fv x, Fig. 2, Fig. 5, a section of Fig. 4, taken in the line y y.

Similar letters of reference indicate corresponding parts in the several gures.

This invention relates, first, to an improved means for dressing the staves, whereby the work may be performed expeditiously and in a perfect manner, and made to operate upon stuft' of different thicknesses, as well as being capable of being adapted to operate upon winding stuff. i

The invention also relates to an improved means for jointing the staves, `whereby staves of different widths may be acted upon and beveled in a perfect manner, and the barrelheads also planed. j To enablethose skilled in the art to fully understand and construct my invention I will proceed to describe it.

A represents the frame ofthe machine,which may be constructed in any proper way to support the working parts, and B is a horizontal shaft, which is placed in proper bearings on the frame A, and has two flanges, a a, projecting from it at opposite sides, said langesbeing of hooked or bent form, so that cutters C O may be attached thereto and have a tangen tial position relatively therewith. On the shaft B there are also secured two langes, b b, projecting from it at opposite sides and at right angles to the anges c a of the cutters C C. The iianges b b, like a a, are of hooked or bent form, so that cutters D D D D,which are attached to them, may have a longitudinal position relatively with the shaft B. The cutters D D are of curved form, one beingcurved in a reverse manner to the other, as shown in Fig. l. The` cutters C are nearly or quite straight. Their inner ends may be slightly curved towardthe shaft B, as shown in Fig. 3.

On the shaft B, near one end, there is secured a pinion, c, into whicha toothed wheel, E, gears. This wheel E has the bearings of its axis d in a small frame, F, which is secured to the frame A, and F is a yielding frame, which is secured by pivots e to the frame A, and has a plate, f, in its front part, which is made to bear against a spring, g, by a set screw, h, which passes through the lower part of F, the spring g being attached to the frame A., as shown in Fig. 5. On the inner end of the axis d of` the wheel E'theie is a pinion, fi,

- which gears into a pinion, j, the axis of which is in the frame F', and has a smaller plnlon,

la, attached to it. The pinion k gears into a segment-rack, G, on one side of a segmentbed, H, which is secured to the upper end of a radiusbar, I, the lower end of which is fitv ted loosely on a shaft, Z, in a frame, J, which is placed loosely on a rod, m, in a frame, K, the latter being tted loosely on a rod, n, in the lower part of the frame A'. This frame K may be adjusted higher or lower by means of a screw-rod, L, which passes through the upper end ot' a bar, M, attached to frame K. By turning the screw-rod L the frames J K, and

` consequently the bed H,maybe adj usted higher or lower, so as to admit oi' a greater or less space between the cutters D D aud the bed H. The frame J, in which the lower end of the radius-bar I is secured, is `retained in proper position by a catch, M', which has a spring, N, bearing against it, the spring having a tendency to keep the catchengaged with a lip or projection, o, attached to frame J. (See Fig. 2.) The catch M is formed simply of an upright bar, p, attached to a rockshaft q, the bar p having a recess made in it to receive the lip o. To the front side of the radius-bar I there is attached an adjustable angle-plate O, which serves as a rcst for the bar I when the frame J is released from the catch MQ the plate O bearing on the rod m in the frame K.

P is a set-screw, which passes through the lower part of the bar L, and serves to disengage the catch M' from the frame J when the bed H has reached the termination of its forfward movement.

The bed His slotted longitudinally and cen trally to receive a clamplbar, Q, the front end 0f WhChfis/hung loosely in a frame, R, in whichte bed H is seeured,and in this clampblrQ a slide, S, is fitted and adjusted by a screw, T, the slide S having two jaws, t t, at-

tached to it, which are in line with two fixed jaws, u u, at the back end of the bar Q. The frame R is a jointed one, or formed of two parts, c u', the upper one, t', being suspended loosely from the upper part of the frame A. (See Fig. 2.)

On the front part of the frame A there are placed two swinging bars, U U, which serve as supports for the clamp bar Q, while the staves are being adjusted or dogged between the jaws t t a a, and one is made larger than the other, so that they may serve as a gage to indicate the thickness of the staves. The bars U U are simply curved pieces of metal hung loosely on horizontal shafts w, and loaded at their lower ends, as shown at w', in order that their upper ends when not in use may be kept apart.

rIhe operation of the above-described parts is as follows: The shaft B is rotated by any convenient power, and two staves are adj usted or dogged to the clamp-bar Q by turningthe screw-rod. The bed H is then adjusted higher or lower by turning the screw-rod L so as to suit the thickness of the staves. The frame F is also adjusted by means of the set-screw h, so that the pinion 7c may gear properly into the segment-rack G, the lip o of frame J being adjusted in the bar p of catch M. rIhe bed H is fed or moved forward inconsequence of the pinion 7c gearing into the rack G, and the stavcs are dressed one in concave and the other in convex form by the cutters D D. Vhen the bed reaches the end of its forward or feed movement, the screw P strikes the bar p of catch M', and disengages the latter from the frame J, which falls sufficiently to disconnect the rack G from the pinion k, and the bed will be forced back to its original position by a spring, 70"conneeted to the frame R. The staves are then reversed in position on the bed H-that is to say, inverted,-and the one with the concave surface placed under the concave cutter, and the one with convex surface placed under the convex cutter. The bed H is then adjusted as before, and again fed forward, and the opposite sides of the l staves are cut. The staves are thus dressed on both sides and ready to be jointed.

The jointing apparatus is composed of the cutters C C, previously described, and a clamp for holding the staves, which is placed on a sliding frame, V, said frame being allowed to move freely in the frame A, and connected at its back end to a swinging frame, lV, suspended from the frame A. The sliding frame V is fitted in guides b b', attached to vertical bars c c', which will admit of being raised and lowered, so that said frame V may be adjusted higher or lower, as may be desired. On the front end of the frame Vthere is secured, by a central bolt or pivot, a rectangular block, X, on which a bolster, Y, is

is a clamp-bar, Z, the ends of which are each.

provided with a recess, d, to fit on vertical bars c', attached to each end of the block X, the bars c' serving as guides for the clampbar. The upper ends of the bars e are connected by a curved bar, f', through the ceuter `of which a screw, A', passes and bears upon the center of the clamp-bar Z.

B is a treadle, which is in the lower part of the frame A, and is connected to two vertical rods, C G", which extend upward in front of the vertical bars c. The upper parts of the rods C 0 are beveled at their front sides, and when the frame V is pressed forward it bears against the beveled surfaces of the rods C O, and as the latter are depressed by the action of the foot ofthe operator on the treadle B the stave, which is clamped on the bolster Y by the clamp-bar Z, will be jointed by the cutters C C. Vhen a stave is jointed at one side, the block X is reversed in position, (turned half a revolution on its pivot,) which brings the opposite side of the stave in front of the cutters, and the other side of the stave is jointed.

I would remark that the frame IV of the slide V may be connected to the frame R of the bed H, so that the slide V may be moved automatically with the bed H. rlhe bilge of the staves is regulated by the set of the cutters C C and by the curve of the bolster Y, and the bevel is regulated by the vertical adjustment of theframe V.

The cutters C C may be used for planing4 the barrel-heads by clamping the latter between barsD D, attached to the frame V, said bars being each provided with a jaw or dog, g. At one side of the frame A there may be a circular saw, E', for-sawing out the staves in proper form. The machine, however,will operate equally well on either sawed or rived staves. If the staves are winding, they may be readily adjusted on the bed H, so as to be properly dressed. y

Having thus' described my invention, what I claim as new, and desire to secure by Letters Patent, isi l. The swinging segment-bed H, provided with the clamp-bar Q, and attached to a radius-bar, I. in combination with the rotary cutters D D', arranged to operate as and for the purpose herein set forth.

2. The particular manner of arranging the radius-bar I, so that its rack G may be connected with the driving-pinion 7c and be dis engaged from it-to wit, by means ofthe frame U, when used in combination With the sWing-` 6. The dog-bars D D, When attached to r" ing bed H and clamp-bar Q, as and for the the sliding frame V and used in connection E purpose specified. With the cutters C C, as and for the purpose 5. The sliding frame V, provided with the specified. reversible bolster Y and clamp-bar-Z, in com- JAGOB DOBBINS. bination with the rotary cutters C C and bev- Vitnesses: eled rods C 0', as and for the purpose set ELISHA THORNTON, forth. HOWARD M. PATRICK. 

